add contributing file and code-of-conduct files

.Rbuildignore

@@ -1,22 +1,31 @@
+
+.travis.yml
 ^.*\.Rproj$
+^CITATION\.cff$
+^LICENSE.md$
+^Meta$
+^README-.*\.png$
+^README\.Rmd$
+^\.DS_Store$
 ^\.Rproj\.user$
-
 ^\.git$
 ^\.github$
-^README\.Rmd$
-^README-.*\.png$
-^Meta$
-^docs$
-^doc$
-^pkgdown$
-^_pkgdown\.yml$
+^\.httr-oauth$
 ^\.lintr$
+^\.zenodo\.json$
+^_pkgdown.yml$
+^_pkgdown\.yml$
 ^appveyor\.yml$
-.travis.yml
-cran-comments.md
-^\.DS_Store$
-^revdep$
-^reconf\.sh$
-^pom\.xml$
+^checklist.yml$
+^codecov\.yml$
+^data-raw$
 ^dev$
-^CITATION\.cff$
+^doc$
+^docs$
+^man-roxygen$
+^organisation.yml$
+^pkgdown$
+^pom\.xml$
+^reconf\.sh$
+^revdep$
+cran-comments.md

.github/CODE_OF_CONDUCT.md

@@ -0,0 +1,25 @@
+# Contributor Code of Conduct
+
+As contributors and maintainers of this project, we pledge to respect all people who 
+contribute through reporting issues, posting feature requests, updating documentation,
+submitting pull requests or patches, and other activities.
+
+We are committed to making participation in this project a harassment-free experience for
+everyone, regardless of level of experience, gender, gender identity and expression,
+sexual orientation, disability, personal appearance, body size, race, ethnicity, age, or religion.
+
+Examples of unacceptable behaviour by participants include the use of sexual language or
+imagery, derogatory comments or personal attacks, trolling, public or private harassment,
+insults, or other unprofessional conduct.
+
+Project maintainers have the right and responsibility to remove, edit, or reject comments,
+commits, code, wiki edits, issues, and other contributions that are not aligned to this 
+Code of Conduct. Project maintainers who do not follow the Code of Conduct may be removed 
+from the project team.
+
+Instances of abusive, harassing, or otherwise unacceptable behaviour may be reported by 
+opening an issue or contacting one or more of the project maintainers.
+
+This Code of Conduct is adapted from the Contributor Covenant 
+(http://contributor-covenant.org), version 1.0.0, available at 
+http://contributor-covenant.org/version/1/0/0/

.github/CONTRIBUTING.md

@@ -0,0 +1,39 @@
+# CONTRIBUTING #
+
+### Fixing typos
+
+Small typos or grammatical errors in documentation may be edited directly using the GitHub web interface, so long as the changes are made in the _source_ file.
+E.g. edit a `roxygen2` comment in a `.R` file below `R/`, not in an `.Rd` file below `man/`.
+
+### Prerequisites
+
+Before you make a substantial pull request, you should always file an issue and make sure someone from the team agrees that it’s a problem. 
+If you’ve found a bug, create an associated issue and illustrate the bug with a minimal [reproducible example](https://www.tidyverse.org/help/#reprex).
+
+### Pull request process
+
+*  We recommend that you create a Git branch for each pull request (PR).  
+*  Look at the GitHub Actions build status before and after making changes.
+The `README` should contain badges for any continuous integration services used by the package.  
+*  We require the `tidyverse` [style guide](http://style.tidyverse.org).
+You can use the [`lintr`](https://CRAN.R-project.org/package=lintr) package to check these styles and the [`styler`](https://CRAN.R-project.org/package=styler) package to apply these styles, but please don't restyle code that has nothing to do with your PR.  
+*  We use [`roxygen2`](https://cran.r-project.org/package=roxygen2).  
+*  We use [`testthat`](https://cran.r-project.org/package=testthat). 
+Contributions with test cases included are easier to accept.  
+*  For user-facing changes, add a bullet to the top of `NEWS.md` below the current development version (UNRELEASED) header describing the changes made followed by your GitHub username, and links to relevant issue(s)/PR(s).
+
+### Code of Conduct
+
+Please note that this project is released with a [Contributor Code of Conduct](CODE_OF_CONDUCT.md). 
+By contributing to this project you agree to abide by its terms.
+
+### Prefer to Email? 
+
+Email the person listed as maintainer in the `DESCRIPTION` file of this repo.
+
+Though note that private discussions over email don't help others - of course
+email is totally warranted if it's a sensitive problem of any kind.
+
+### Thanks for contributing!
+
+This contributing guide is adapted from the `tidyverse` contributing guide available at https://raw.githubusercontent.com/r-lib/usethis/master/inst/templates/tidy-contributing.md 

.gitignore

@@ -1,58 +1,59 @@
-# History files
-.Rhistory
-.Rapp.history
-
-# Session Data files
-.RData
-.RDataTmp
-
-# User-specific files
-.Ruserdata
 
 # Example code in package build process
-*-Ex.R
-
+# Hidden file from mac-os
+# History files
+# OAuth2 token, see https://github.com/hadley/httr/releases/tag/v0.3
 # Output files from R CMD build
-/*.tar.gz
-
 # Output files from R CMD check
-/*.Rcheck/
-
+# R Environment Variables
+# RStudio Connect folder
 # RStudio files
-.Rproj.user/
-
-# produced vignettes
-vignettes/*.html
-vignettes/*.pdf
-Meta/
-inst/doc/
-doc/
-
-# OAuth2 token, see https://github.com/hadley/httr/releases/tag/v0.3
-.httr-oauth
-
-# knitr and R markdown default cache directories
-*_cache/
-/cache/
-
+# Session Data files
 # Temporary files created by R markdown
-*.utf8.md
+# User-specific files
+# knitr and R markdown default cache directories
+# pkgdown site
+# produced README.html
+# produced vignettes
+# translation temp files
+*-Ex.R
+*.dbf
+*.doc*
+*.gddoc
+*.gdsheet
+*.gpkg
+*.html
 *.knit.md
-
-# R Environment Variables
+*.mdb
+*.shp*
+*.shx
+*.utf8.md
+*.xls*
+*_cache/
+*_files
+.DS_Store
+.RData
+.RDataTmp
+.Rapp.history
 .Renviron
-
-# pkgdown site
+.Rhistory
+.Rproj.user
+.Rproj.user/
+.Ruserdata
+.httr-oauth
+/*.Rcheck/
+/*.tar.gz
+/cache/
+Meta/
+README.html
+doc/
+docs
 docs/
-
-# translation temp files
+inst/doc/
+libs
+output
 po/*~
-
-# RStudio Connect folder
+renv/library
 rsconnect/
-
-# Hidden file from mac-os
-.DS_Store
-
-# produced README.html
-README.html
+vignettes/*.html
+vignettes/*.pdf